Transformer Insulation Degradation Studies by Dissolved Gas Analysis

Abstract

The alternate liquid dielectric is the need of the hour. Several investigators tried with diverse of eatable and non-edible oils for the insulation and cooling of distribution transformers. Conventionally, standard test method is used for predicting the oil’s electrical, physical and chemical properties. However, now days researchers are conducting a spectroscopic analysis of oil samples along with conventional test. Because of, spectroscopic analysis is best choice for evaluating tolerate ability of solid and liquid insulating material which can be used as insulating materials for transformer. The paper, critical study has been performed on transformer insulating oil by Dissolved gas analysis. From, the review found that DGA analysis is an essential method which is used to predict the stability of insulating material under up normal condition by evaluating gas emission form transformer oil sample, respectively. What is more, DGA is accurate and effective methods that of others.